1. (informal) an adult whose interests and behaviour follow youth culture; someone who hasn't fully grown up

Derived forms: adultescents

• inarguable
• inarticulate
• inarticulately
• inarticulateness
• inartistic
• inasmuch
• inattention
• inattentive
• inattentively
• inattentiveness
• inaudibility
• inaudible
• inaudibleness
• inaudibly
• inaugural
• inaugural address
• inaugurally
• inaugurate
• inauguration
• Inauguration Day
• inauspicious
• inauspiciously
• inauspiciousness
• inauthentic
• inboard